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Collectivity and manifestations of minimum-bias jets in high-energy nuclear collisions
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| Zeitschriftentitel: | EPJ Web of Conferences |
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| Personen und Körperschaften: | |
| In: | EPJ Web of Conferences, 172, 2018, S. 05004 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
EDP Sciences
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| Schlagwörter: |
| Zusammenfassung: | <jats:p>Collectivity, as interpreted to mean flow of a dense medium in high-energy A-A collisions described by hydrodynamics, has been attributed to smaller collision systems – p-A and even p-p collisions – based on recent analysis of LHC data. However, alternative methods reveal that some data features attributed to flows are actually manifestations of minimum-bias (MB) jets. In this presentation I review the differential structure of single-particle <jats:italic>p<jats:sub>t</jats:sub></jats:italic> spectra from SPS to LHC energies in the context of a two-component (soft + hard) model (TCM) of hadron production. I relate the spectrum hard component to measured properties of isolated jets. I use the spectrum TCM to predict accurately the systematics of ensemble-mean <jats:italic>p̅<jats:sub>t</jats:sub></jats:italic> in p-p, p-A and A-A collision systems over a large energy interval. Detailed comparisons of the TCM with spectrum and correlation data suggest that MB jets play a dominant role in hadron production near midrapidity. Claimed flow phenomena are better explained as jet manifestations agreeing quantitatively with measured jet properties.</jats:p> |
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| Umfang: | 05004 |
| ISSN: |
2100-014X
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| DOI: | 10.1051/epjconf/201817205004 |